Subqueries and intersect

[Richard]

I have two tables

1.titles: Id , Title
2.words: Id , Word

So I have a serie of titles and each title contains a serie of words. Now I would like to find the titles where there are two are more words matching Word in table 2.
I learnt SQL on oracle, and I thought to use a subquery and INTERSECT. Something like:

SELECT Title FROM titles
WHERE Id = (SELECT Id FROM words
WHERE Word = "word1"
INTERSECT
SELECT Id FROM words
WHERE Word = "word2
INTERSECT
SELECT Id FROM words
WHERE Word = "word3");

The "MySQL administrator" gives me next:

Server Information
MySQL Version: MySQL 4.0.18-max-debug
Client Information
Version: MySQL Client Version 5.0.0

As far as I could figure out subqueries are not supported < 4.1. What is this 5.0.0?
And how can I get my query working?

Thanks a lot,

Richard